H. Cai, X. Jiangzhen, H. Zhao, C. Gaoting, F. Zujie, I. S. Kim, and Y. Kim, "All-fiber q-switched erbium laser using a fiber bragg grating placed in loop mirror as a wavelength-selective intensity modulator,"
in Optical Fiber Communications Conference, A. Sawchuk, ed.,
Vol. 70 of OSA Trends in Optics and Photonics
(Optical Society of America, 2002), paper ThGG31.